Solon m



(No Model.)

S. M. TERRY.

CLOCK STRIKING MECHANISM.

Patented Sept. 2, 1884 I I I a A N Q J I 9 same, looking from the left.

UNTTED STATES PATENT OFFICE.

SOLOh M. TERRY, OF PITTSFIELD, MASSACHUSETTS, ASSIGNOR TO TH]? TERRY CLOCK COMPANY, OF SAME PLACE.

CLOCK STRIKING MECHANISM.

JPECIEICATIOIT forming part. of Letters Patent No. 304,580, dated September 2,1884, Application filed April28, 1884. (No model.)

usual construction, all as more fully hereinafter described.

A represents the main wheel, which works into a pinion, a, on the shaft B. On this shaft To all whom it may concern:

Be it known that I, SOLON M. TERRY, of Pittsfield, in the county of Berkshire and State of Massachusetts, have invented a new Improvement in Clock-Movements; and I do B is a gear, 0, which works into a pinion, D, hereby declare the following, when taken in on the hammer-wheel shaft. 011 this shaft the connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a front view of the train of gearing composing the strike-movement of a clock, showing the hammer, the front plate of the frame being removed; Fig. 2, a side view of the hammer-wheel E is arranged in the usual manner. The striking is produced by pins 1) on this wheel, which, as the wheel revolves in the direction indicated by the arrow, strike the hammer-arm F and turn the hammer G back, as seen in broken lines, until the pin passes from the arm'F to allow the hammer to escape. Then the hammer gives its blow" by the reaction of the spring H on its shaft. On the hammer-wheel shaft is a gear, I.

L is the'flier-shaft, arranged vertically in bearings M M, and so as to stand in the plane of the gear I. On this shaft is a worm, d, corresponding to the teeth of the gear I, and so that as the wheel I revolves it will, through the worm (l, impart rotation to the shaft L. On this shaft is the flier N. Each tooth of the gear I imparts a full rotation to the fliershatt L. The worm offers much greater resistance to the revolution of the gear I than would a pinion into which the same wheel This invention relates to an improvement in clock-movements, with special reference to the striking part, and to such as are adapted to the bell commonly known as cathedral bellthat is to say, a heavy wire bell in which slow strokes are necessary. In the usual construction of the striking part of the clock a continuous series of spur-gears and pinions are arranged between the main wheel and the flier. For the cathedral bell, in order that the blows shall be sufficiently slow, the movement of the hammer-lever is necessarily retarded to a much greater extent than fore,very greatly reduces the revolution of the in common bells. To do this additional gears gear I from what it would be were the gear I are introduced, usually one additional shaft working into a pinion in the usual manner. carrying wheel and pinions. The shaft of the The flier N offers a resistance to the rotation last wheel and pinion, as well astheshaft of the of the shaft L in the usual manner; but, owflier and its pinion, necessarily revolve with ing to the resistance produced by the worm d, great rapidity, and if the gear be as in the the flier may be of small area, and so as to usual construction of spur-gears and pinions, readily stand between the plates of the case. there is unavoidably an unpleasant rattling This flier still further retards the rotation of noise accompanying the striking operation, the hammer-wheel, and to the extent necessadue to the rapid revolutions of the two last ry or desirable ina cathedral strike. To proshafts and the gears and pinionsworking toduce the same resistance to or retarding of the gether. I hammer-wheel by the employment of parallel The object of my invention is to avoid this shafts, spur-gears, and pinions, as in the usual unpleasant noise in this class of strike-moveconstruction,an additional shaft carrying gear ments; and-it consists in arranging the flier on and pinion would be necessary between the a shaft at right angles to the shaft of the wheel hammer-wheel and the then parallel flierwhich drives it, the shaft provided with a shaft carrying its pinion, and in that case the worm into which the spur-gear on the next flier would necessarily revolve much more shaft back of it works, and whereby the rotarapidly than does the flier in my improved tion of that spur will impart rapid rotation to construction. The slower revolution of the the flier while running at amuch less velocity flier-shaft in this construction, and the emthan must the next whe l to the flier in the ployment of the worm as the means of commight work. This greater resistance, there 2 eo rseo inunicating' revolution thereto, avoids entirely the rattling noise accompanying this class of strike in the usual construction, and not only is this objection overcome, but the cost of construction is greatly reduced, as at least one shaft, with its gear and pinion, is dispensed with. In some cases the gear I is the halnnienwheel, the pins I) being arranged right angles to the shalt of the hammer-Wheel.

I claim- In a strike-movement for clocks, the co1nbination of the hannner-wheel, the main wheel A, and intermediate gearing, whereby rotation is imparted to the shaft of said hammer Wheel, the hammer G, the gear I on the hammer-Wheel shaft, the shaft L at right angles to therein. It will be understood by haininerthe shaft of the hammer-whee], and carrying Wheel thatI refer to the pin or pins by which a Worm, into which the gear I Works, and also 25 I the hammer is bell.

WVhile I prefer to arrange the flier-shaft Vertically, as shown, it may be arranged at any convenient position, but at substantially caused to draw back from the carrying the flier N substantially as described.

SOLON M. TElEtltY.

IVitnesses:

Rome. XV. ADAM, G. D. Framers. 

